塑封

sù fēng wén jiàn jiā

塑封文件夹

plastic-coated documents folder

sù fēng shū cài

塑封蔬菜

package vegetables in plastic bags

wǒ yǐ yòng tòu míng sù liào bó mó duì zhào piàn jìn xíng sù fēng

我已用透明塑料薄膜对照片进行塑封。

I've covered the photographs with transparent plastic sheets.